Strenghthening with reinforcement plaster and tension rope members of 3d rc buldings

Concrete structures need to be destroyed or strengthened due to several reasons such as ground subsidence, earthquake, changes in codes and changes in usage objectives. Moreover, these structures need to be strengthened because they do not receive adequate engineering service, and ready mixed concrete and ribbed iron are not used in them. Based on the protocol signed between Governorship of Manisa and Civil Engineering Department of Celal Bayar University, a project team was established and they concluded that about 90% of school buildings in Manisa need to be strengthened. This very high percentage may imply that other buildings such as houses, hospital and businesses may have similar construction issues. To this end, a fast, economical, applicable and reliable method is needed to evaluate safety of these buildings. Nowadays, reinforcement concrete shear wall, jacketing, FRP, steel profile or matting steel application, are among the methods widely used to reinforce concrete structures. Our study aims to develop a new reinforcement method, which is theorized to be alternative, economical and dependable. In this study, brick masonry walls in the literature and in practice often used to reinforce steel cordmethod is intended to develop an alternative method. Within the scope of our study, damaged and undamaged structures will be strengthened under the real seismic loads. Two- story and single-span concrete structures will be subjected to seismic loads using earthquake simulators and the damage will be artificially made. Then, the building will be strengthened using steel fiber concrete, steel cord and these structures will be subjected to seismic loads. Thus, the efficiency of reinforcement method will be determined. The optimum steel fiber type and its amount was previously determined in a project named MUH-2012-98. Steel fiber plaster mortar was applied to brick walls in this project. Maximum load capacity value, shear strength, rigidity ratio, deformation ability and the energy used were evaluated and the optimum fiber ratio was achieved. Therefore, plaster mortar having 3 % steel fiber will be applied to brick walls in the present study. Moreover, strengthened brick walls will be anchored to beam and columns enabling brick walls to be compatible with the structure. Moreover, strengthened brick walls will be anchored to beam and columns enabling brick walls to be compatible with the structure. Dynamic characteristics of all structures will be determined using Operational Modal Analysis (OMA). By accurately determining dynamic characteristics such as period and damping ratio of structures using computerized analysis, more realistic results will be obtained. On top of that, the effects, reinforcement methods have on the dynamic nature of the structure have received considerable attention.With our study, the horizontal deformation ability, the horizontal load capacity and the periods of the structure will be investigated. Provided that our study becomes a success, reinforcement of a structure will be alternatively accomplished. With the use of these new methods, a number of structures in Manisa province of Turkey will be strengthened using faster, easier, more economical methods.